Valve



FIG. 1 is a top perspective view of a valve showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a right view thereof; and,

FIG. 7 is a left view thereof.

The broken lines represent unclaimed portions of the valve. 

The ornamental design for a valve, as shown and described. 